Update select-window-transact-sql.md

Changes requested from Sharanya-B include:
- Fix for a grammatical error in the 'Arguments' section
- Edits in 'Examples' section in accordance with the format of other docs like 'Order By' in Select statement.

Author: thesqlsith

docs/t-sql/queries/select-window-transact-sql.md

@@ -71,7 +71,7 @@ ORDER BY order_by_expression
 
 #### window_name
 
-Name of the name of the defined window specification. This name will be used by the window functions in the OVER clause to refer the window specification. Window names must follow the rules for identifiers.
+Name of the defined window specification. This name will be used by the window functions in the OVER clause to refer the window specification. Window names must follow the rules for identifiers.
 
 #### reference_window_name
 
@@ -104,7 +104,7 @@ The restrictions for usage of window specifications in the OVER clause with the
 
 ## Examples
 
-### Use the window defined in WINDOW clause
+### A. Specifying a window defined in the window clause
 
 The following example query shows uses a named window in the OVER clause.
 
@@ -167,7 +167,7 @@ Here is the result set.
 | 7 | Campbell | 1573012.9383 | 98055 |
 | 8 | Tsoflias | 1421810.9242 | 98055 |
 
-### Simple example reuses windows in OVER clause
+### B. Specifying a single window in multiple over clauses
 
 The following example shows defining a window specification and using it multiple times in an OVER clause.
 
@@ -231,7 +231,7 @@ Here is the result set.
 | 43664 | 773 | 1 | 14 | 1 | 8 | 1 | 4 |
 | 43664 | 778 | 1 | 14 | 1 | 8 | 1 | 4 |
 
-### Defining common specification in WINDOW clause
+### C. Defining common specification in window clause
 
 This example shows defining a common specification in a window and using it to define additional specifications in the OVER clause.
 
@@ -283,7 +283,7 @@ Here is the result set.
 | 43664 | 714 | 1 | 11 | 1 | 6 |
 | 43664 | 716 | 1 | 12 | 1 | 6 |
 
-### Forward and backward window references
+### D. Forward and backward window references
 
 This example shows using named windows as forward and backward references when defining a new window in the WINDOW clause.